PRIN. OF LIFE (LOOSELEAF) W/LAUNCHPAD
3rd Edition
ISBN: 9781319465377
Author: HILLIS
Publisher: MAC HIGHER
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Chapter 26.2, Problem 2LO
Summary Introduction
To explain: The use of two fertilization processes in plants.
Introduction: Fertilization is the process of union of sperm and egg cell produced from the male and female reproductive organs. In plants double fertilization occurs in flowering plants. Double fertilization is a process involving two sperm nuclei from the pollen fuses an ovule and polar nuclei to form an embryo surrounded by an endosperm.
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Which of the following best describes why it is difficult to develop antiviral drugs? Explain why.
A. antiviral drugs are very difficult to develop andhave no side effects
B. viruses are difficult to target because they usethe host cell’s enzymes and ribosomes tometabolize and replicate
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This question has 3 parts (A, B, & C), and is under the subject of Nutrition. Thank you!
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Chapter 26 Solutions
PRIN. OF LIFE (LOOSELEAF) W/LAUNCHPAD
Ch. 26.1 - Prob. 1LOCh. 26.1 - Prob. 2LOCh. 26.1 - Prob. 1RACh. 26.1 - Prob. 2RACh. 26.1 - Prob. 3RACh. 26.2 - Prob. 1LOCh. 26.2 - Prob. 2LOCh. 26.2 - Prob. 3LOCh. 26.2 - Prob. 1FQCh. 26.2 - Prob. 2FQ
Ch. 26.2 - Prob. 1RACh. 26.2 - Prob. 2RACh. 26.2 - Prob. 3RACh. 26.2 - Prob. 4RACh. 26.3 - Prob. 1LOCh. 26.3 - Prob. 2LOCh. 26.3 - Prob. 3LOCh. 26.3 - Prob. 4LOCh. 26.3 - Prob. 1ICh. 26.3 - Prob. 2ICh. 26.3 - Prob. 1TKCh. 26.3 - Prob. 2TKCh. 26.3 - Prob. 3TKCh. 26.3 - Prob. 4TKCh. 26.3 - Prob. 1RACh. 26.3 - Prob. 2RACh. 26.3 - Prob. 3RACh. 26.3 - Prob. 4RACh. 26 - Prob. 1.1QCh. 26 - Prob. 1.2QCh. 26 - Prob. 1.3QCh. 26 - Prob. 2.1QCh. 26 - Prob. 2.2QCh. 26 - Prob. 2.3QCh. 26 - Prob. 3.1QCh. 26 - Prob. 3.2QCh. 26 - Prob. 3.3QCh. 26 - Prob. 3.4Q
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- This question has multiple parts (A, B & C), and under the subject of Nutrition. Thank you!arrow_forwardCalculate the CFU/ml of a urine sample if 138 E. coli colonies were counted on a Nutrient Agar Plate when0.5 mls were plated on the NA plate from a 10-9 dilution tube. You must highlight and express your answerin scientific notatioarrow_forwardDon't copy off the other answer if there is anyarrow_forward
- Use the following information to answer the question(s) below. Martin Wikelski and L. Michael Romero (Body size, performance and fitness in Galápagos marine iguanas, Integrative and Comparative Biology 43 [2003]:376-86) measured the snout-to-vent (anus) length of Galápagos marine iguanas and observed the percent survival of different-sized animals, all of the same age. The graph shows the log snout-vent length (SVL, a measure of overall body size) plotted against the percent survival of these different size classes for males and females. Survival (%) 100- 80- 60- 40- 20- 0+ 1.9 T 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Log SVL (mm) 19) Examine the figure above. What type of selection for body size appears to be occurring in these marine iguanas? A) directional selection B) stabilizing selection C) disruptive selection D) You cannot determine the type of selection from the above information. 3arrow_forward24) Use the following information to answer the question below. Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are determined (see table) and used to determine the actual allele frequencies in the population. TT 0.49 Tt 0.42 tt 0.09 Refer to the table above. Is this population in Hardy-Weinberg equilibrium? A) Yes. C) No; there are more homozygotes than expected. B) No; there are more heterozygotes than expected. D) It is impossible to tell.arrow_forward30) A B CDEFG Refer to the accompanying figure. Which of the following forms a monophyletic group? A) A, B, C, and D B) C and D C) D, E, and F D) E, F, and Garrow_forward
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